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The Diversity of Hoya (Apocynaceae: Asclepiadoideae) in Some Parts of Kedah and Perak, Peninsular Malaysia

Azim Rabbani, Zakaria Rahmad, Rusly Rosazlina, Gbenga Akomolafe, Syed Mohd Edzham and Faizal Azmi

Pertanika Journal of Science & Technology, Volume 44, Issue 1, February 2021


Keywords: Checklist, conservation, diversity, Hoya, northern region, Peninsular Malaysia

Published on: 24 Febuary 2021

This study provided data on the diversity of Hoya species reported to occur in some parts of the northern region of Peninsular Malaysia. Seven locations were chosen between two states, Kedah (Lata Celak, Sedim, and Bukit Hijau) and Perak (Mahang, Belukar Semang, Sungai Rui, and Pondok Tanjung). This extensive fieldwork was carried out from 2018 until the end of 2019 to provide a baseline checklist for this genus in this northern region. All living specimens found were recorded, and some species were cultivated for further identification and ex-situ conservation purposes. A total of 27 species and one variety were recorded, out of which 15 species were newly reported for the northern region of Peninsular Malaysia. The newly described species, Hoya peninsularis Rodda & Zakaria, was also reported in this study. One unknown species was found and labelled as Hoya sp. cf. scortechinii. Further identification process together with molecular analysis of this plant is still ongoing. The most diverse forests are Sungai Rui and Lata Celak, having the Shannon index of 2.741 and 2.622, respectively. Both forests possess the richest in Hoya species, but with low dominance index. The Sorenson similarity index is 6.74%, indicating a very low similarity of Hoya species between the studied sites. Due to the high diversity recorded, the number of Hoya species in the country is expected to increase if the genus is explored continuously. However, most of the study areas were exposed to extreme logging activities and had a high degree of human disturbances, indicating the need for intensive conservation efforts in this genus.

  • Allan, E., Weisser, W., Weigelt, A., Roscher, C., Fischer, M., & Hillebrand, H. (2011). More diverse plant communities have higher functioning over time due to turnover in complementary dominant species. Proceedings of the National Academy of Sciences, 108(41), 17034-17039.

  • Barukial, J., & Sarmah, J. N. (2011). Ethnomedicinal plants used by the people of Golaghat District, Assam, India. International Journal of Medicinal and Aromatic Plants, 1(3), 203-211.

  • Benzing, D. H. (2008). Vascular epiphytes. Cambridge University Press.

  • Chao, A., Ma, K. H., & Hsieh, T. C. (2016). iNEXT (iNterpolation and EXTrapolation) online: Software for interpolation and extrapolation of species diversity.

  • Corbara, B., Dejean, A., & Orivel, J. (1999). Ant gardens, a unique epiphyte-ant association. Année Biologique, 38, 73-89.

  • Damayanti, I., Siregar, I. Z., & Rahayu, R. (2017). Asosiasi pohon dengan epifit Hoya spp. di Taman Nasional Bukit Duabelas [Tree association with epiphytes Hoya spp. in Bukit Duabelas National Park]. Journal of Tropical Silviculture, 8(3), 191-196.

  • Davidson, D. W., & Epstein, W. W. (1989). Ephiphytic associations with ants. In U. Lüttge (Ed.), Vascular plants as epiphytes (pp. 200-233). Springer.

  • Gautam, R. K., Singh, D., & Nainwani, R. (2013). Medicinal plants having anti-arthritic potential: A review. International Journal of Pharmaceutical Sciences Review and Research, 19(1), 96-102.

  • Hammer, O., Harper, D. A., & Ryan, P. D. (2001). PAST: Paleontological Statistics software package for education and data analysis. Paleontologia Electronica, 4(1), 9.

  • Hansen, D. M., Olesen, J. M., Mione, T., Johnson, S. D., & Muller, C. B. (2007). Coloured nectar: distribution, ecology, and evolution of an enigmatic floral trait. Biological Reviews, 82(1), 83-111.

  • Kiew, R. (1989). Hoya endauensis (Asclepiadaceae) and Licuala dransfieldii (Palmae), two new species from Ulu Endau, Peninsular Malaysia. Malayan Nature Journal, 42(4), 262-265.

  • King, G., & Gamble, J. S. (1908). Hoya - Materials for a flora of the Malayan Peninsula. Journal of the Asiatic Society of Bengal, 74, 559-580.

  • Kleijn, D., & van Donkelaar, R. (2001). Notes on the taxonomy and ecology of the genus Hoya (Asclepiadaceae) in Central Sulawesi. Blumea, 46(3), 457–483.

  • Lamb, A., & Rodda, M. (2016). A guide to hoyas of Borneo. Natural History Publications (Borneo).

  • Luttge, U. (2008). Physiological ecology of tropical plants (2nd ed.). Springer. Where

  • Mollik, M. A. H., Hossan, M. S., Paul, A. K., Taufiq-Ur-Rahman, M., Jahan, R., & Rahmatullah, M. (2010). A comparative analysis of medicinal plants used by folk medicinal healers in three districts of Bangladesh and inquiry as to mode of selection of medicinal plants. Ethnobotany Research and Applications, 8, 195-218.

  • Orivel, J., & Leroy, C. (2011). The diversity and ecology of ant gardens (Hymenoptera: Formicidae; Spermatophyta: Angiospermae). Myrmecological News, 14, 73-85.

  • Rahayu, S. (2012). Hoya (Apocynaceae: Asclepiadoideae) diversity in Gunung Gede Pangrango National Park, West Java, Indonesia. Reinwardtia, 13(4), 331-339.

  • Rahayu, S., Fakhrurrozi, Y., & Putra, H. F. (2018). Hoya species of Belitung Island, Indonesia, utilization and conservation. Biodiversitas Journal of Biological Diversity, 19(2), 369-376.

  • Rahayu, S., Jusuf, M., Suharsono, S., Kusmana, C., & Abdulhadi, R. (2010). Morphological variation of Hoya multiflora Blume at different habitat type of Bodogol Research Station of Gunung Gede Pangrango National Park, Indonesia. Biodiversitas Journal of Biological Diversity, 11(4), 187-193.

  • Rahmad, Z., & Akomolafe, G. F. (2019). Taxonomic diversity of ferns of two recreational forests in Kedah, Malaysia. Malaysian Journal of Science, 38(3), 1-11.

  • Ridley, H. N. (1923). A botanical excursion to northern Sumatra. Journal of the Malayan Branch of the Royal Asiatic Society, 1(87), 46-113.

  • Rintz, R. E. (1978). The Peninsular Malaysian species of Hoya (Asclepiadaceae). Malaysian Nature Journal, 30(3&4), 467-522.

  • Rintz, R. E. (1980). The Peninsular Malayan species of Dischidia. Blumea, 26(1), 81-126.

  • Rodda, M. (2015). Two new species of Hoya R.Br. (Apocynaceae, Asclepiadoideae) from Borneo. PhytoKeys, 53, 83-93.

  • Rodda, M., & Simonsson, J. N. (2012). (Apocynaceae, Asclepiadoideae), a new campanulate flowered species from Peninsular Malaysia and southern Thailand. Feddes Repertorium, 122(5-6), 337-343.

  • Rodda, M., & Simonsson, J. N. (2013). The taxonomy of Hoya micrantha and Hoya revoluta (Apocynaceae, Asclepiadoideae). Webbia, 68(1), 7-16.

  • Rodda, M., & Zakaria, R. (2020). Hoya peninsularis (Apocynaceae, Asclepiadoideae), a new species from Peninsular Malaysia, and notes on Hoya maingayi and Gongronema wrayi. Nordic Journal of Botany, 38(10).

  • Salim, J. M., & Nikong, D. (2020). Notes on Hoya of Terengganu, Peninsular Malaysia. Malayan Nature Journal, 72(1), 43-51.

  • Sasaki, T., & Lauenroth, W. K. (2011). Dominant species, rather than diversity, regulates temporal stability of plant communities. Oecologia, 166(3), 761-768.

  • Sorenson, T. (1948). A method of establishing groups of equal amplitude in plant sociology based on similarity of species content and its application to analyses of the vegetation on Danish commons. Biologiske Skrifter, 5(4), 1-34.

  • Sulaeman, M., Sulistijorini, S., & Rahayu, S. (2019). Habitat suitability for Hoya spp. (Apocynaceae) in the Bodogol Conservation Area, West Java. Biosaintifika: Journal of Biology and Biology Education, 11(1), 91-99.

  • Trân, T. B., Kim, J. H., Kim, D. K., Lee, J., Bui, T. H., Simonsson, J. N., & Rodda, M. (2011). Hoya ignorata (Apocynaceae, Asclepiadoideae): An overlooked species widely distributed across South East Asia. Novon, 21(4), 508-514.

  • Wagner, D. (1997). The influence of ant nests on Acacia seed production, herbivory and soil nutrients. Journal of Ecology, 85(1), 83-93.

  • Wai, J. S., Sridith, K., & Thaithong, O. (2008). Hoya imperialis Lindl. (Apocynaceae: Asclepiadaceae), a new record for Thailand. Thai Forest Bulletin (Botany), (36), 81-85.

  • Wanntorp, L. (2009). Phylogenetic systematics of Hoya (Apocynaceae). Blumea-Biodiversity, Evolution and Biogeography of Plants, 54(1-3), 228-232.

  • Wanntorp, L., & Kunze, H. (2009). Identifying synapomorphies in the flowers of Hoya and Dischidia — Toward phylogenetic understanding. International Journal of Plant Sciences, 170(3), 331-342.

  • Wanntorp, L., Kocyan, A., van Donkelaar, R., & Renner, S. S. (2006). Towards a monophyletic Hoya (Marsdenieae, Apocynaceae): Inferences from the chloroplast trnL region and the rbcL-atpB spacer. Systematic Botany, 31(3), 586-596.

  • Winkler, M., Hulber, K., & Hietz, P. (2005). Effect of canopy position on germination and seedling survival of epiphytic bromeliads in a humid montane forest. Annals of Botany, 95(6), 1039-1047.

  • Yang, D. S., Pennisi, S. V., Son, K. C., & Kaysl, S. J. (2009). Screening indoor plants for volatile organic pollutant removal efficiency. Hortscience, 44(5), 1377-1381.

  • Zakaria, R., Mansor, A., Syafiq, M., Azmi, A., Rusdi, N. M., Harun, A. H., Harun, M. S., & Azmi, M. F. (2019). Notes on the Hoya (Apocynaceae, Asclepiadoideae) of Pulau Pangkor, Perak, Peninsular Malaysia. The Malaysian Forester, 82(1), 197-203.

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